{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"6c098e119835","name":"PISTON KIT YAM XS650 76.50, WOSSNER K8818D150-2 680cc","sku":"56-W9899.150.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":415.09,"formatted":"£415.09"},"summary":"Set of 4 Wossner forged pistons, +1.50mm oversize (76.50mm bore), part number K8818D150-2. Features an elliptical design for balanced heat expansion and load distribution, optimal heat transfer, and is made in Germany. Specifications include a 76.44mm actual piston size, 679/688cm³ displacement, 74.00mm stroke, 0.06mm clearance, OEM compression ratio of 8.40:1, +23.40cm³ dome volume, and 29.00mm compression height. Cross-reference OEM part numbers for clips: CW20, piston pin: WP068, and rings: 765XDS.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"76.50mm"},{"label":"Variant Id","value":"259110"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9899_2E150_2EWO/5f3be2beb23e4fa7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9899_2E150_2EWO/5f3be2beb23e4fa7.jpg"],"description":"Set of 4 Wossner forged pistons, +1.50mm oversize (76.50mm bore), part number K8818D150-2. Features an elliptical design for balanced heat expansion and load distribution, optimal heat transfer, and is made in Germany. Specifications include a 76.44mm actual piston size, 679/688cm³ displacement, 74.00mm stroke, 0.06mm clearance, OEM compression ratio of 8.40:1, +23.40cm³ dome volume, and 29.00mm compression height. Cross-reference OEM part numbers for clips: CW20, piston pin: WP068, and rings: 765XDS.","descriptionMarkdown":"### Wossner Piston Kit for Yamaha XS650 (76.50mm Bore)\n\nThis Wossner piston kit is engineered to enhance the performance and durability of your Yamaha XS650 motorcycle. The kit features four forged pistons with a 76.50mm bore, representing a +1.50mm oversize. Wossner pistons are manufactured in Germany with precision and quality in mind, designed to handle increased engine demands.\n\nThe unique elliptical design of these pistons ensures even distribution of thrust loads as the piston expands under heat. This intelligent design helps to prevent localized stress and potential piston collapse, promoting longevity and consistent engine operation. These pistons are also designed for optimal heat transfer to the cylinder walls, contributing to efficient engine cooling.\n\n**Key Features:**\n\n \n- Set of four high-quality forged Wossner pistons.\n \n- Oversize specification: +1.50mm.\n \n- Actual piston diameter: 76.44mm.\n \n- Bore size: 76.50mm.\n \n- Elliptical piston design for balanced load distribution and heat expansion.\n \n- Engineered for optimal heat transfer.\n \n- Proudly made in Germany.\n\n**Specifications:**\n\n \n- Part Number: K8818D150-2\n \n- Displacement: 679 / 688cm&sup3;\n \n- Stroke: 74.00mm\n \n- Clearance: 0.06mm\n \n- Dome Volume: +23.40cm&sup3;\n \n- Compression Height: 29.00mm\n \n- Wossner Compression Ratio: OEM\n \n- OEM Compression Ratio: 8.40:1\n\n**Included Components (Cross-Reference):**\n\n \n- Clips: CW20\n \n- Piston Pin: WP068\n \n- Rings: 765XDS","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"XS 650","cc":null,"notes":null,"years":"1974–1981"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Pistons & Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/pistons-kits"}],"links":{"page":"https://www.2brosparts.com/products/piston-kit-yam-xs650-7650-wossner-k8818d150-2-680cc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/6c098e119835:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/6c098e119835:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. Every URL is a plain path (no query string) and a GET. Nothing is stored between calls.","checkoutLinkFormat":"https://www.2brosparts.com/api/agent/checkout/GB/{basketKey}:{quantity},{basketKey}:{quantity}","steps":["1. Find products: follow links in these responses, or fetch https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus} (e.g. https://www.2brosparts.com/api/agent/search/GB/brake+pads). Every product has a basketKey.","2. Optional check: https://www.2brosparts.com/api/agent/basket/GB/{basketKey}:{quantity},{basketKey}:{quantity} returns stock, totals per delivery option and the checkout link.","3. Give the shopper the checkout link. Opening it fills their basket with exactly these items (replacing what was there) and opens checkout for United Kingdom. They pay on 2brosparts.com through Stripe."],"noFetchNeeded":"You can write the checkout link yourself from basketKeys and quantities; nothing has to be fetched first. Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}